Databases

Rust support for databases occurs on multiple levels, from direct drivers to ORMs. Some of the crates are async and some not, which modifies how other code will has to interact with them.

Database Drivers and Bindings
Postgres - includes tokio_postgres for async operations and Postgres pub/sub.

sqlite

MySQL

redis

ORMs
diesel is popular, strongly typed ORM. Supports sqlite, Postgres, and mysql. diesel does not support async operations at this time.

Table for SQL types in diesel: https://kotiri.com/2018/01/31/postgresql-diesel-rust-types.html

Other
sqlx is a newer crate that supports type checked SQL queries. Fully async and supports Postgres pub/sub.

Connection Pooling
r2d2

deadpool